<!doctype html>
<title>HTMLSelectListElement Test: keyboard accessibility</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-actions.js"></script>
<script src="/resources/testdriver-vendor.js"></script>
  <selectlist id="selectList0">
    <button id="selectList0-button0" type=selectlist>button</button>
    <option class=one>one</option>
    <option class=two>two</option>
    <option class=three>three</option>
  </selectlist>

  <selectlist id="selectList1">
    <option id="selectList1-child0">one</option>
  </selectlist>

  <selectlist id="selectList2" disabled>
    <button id="selectList2-button0" type=selectlist>button</button>
    <option disabled>one</option>
    <option>two</option>
    <option>three</option>
  </selectlist>

  <selectlist id="selectList3">
    <button id="selectList3-button0" type=selectlist>button</button>
    <option class=one>one</option>
    <option disabled>two</option>
    <option class=three>three</option>
  </selectlist>
<script>
// See https://w3c.github.io/webdriver/#keyboard-actions
const KEY_CODE_MAP = {
  'Enter':      '\uE007',
  'Space':      '\uE00D',
  'ArrowUp':    '\uE013',
  'ArrowDown':  '\uE015'
};

function clickOn(element) {
    const actions = new test_driver.Actions();
    return actions.pointerMove(0, 0, {origin: element})
      .pointerDown({button: actions.ButtonType.LEFT})
      .pointerUp({button: actions.ButtonType.LEFT})
      .send();
  }

promise_test(async t => {
  const selectList = document.querySelector("#selectList0");
  const button = document.querySelector("#selectList0-button0");
  assert_false(selectList.open, "selectlist should not be initially open");

  await test_driver.send_keys(button, KEY_CODE_MAP.Enter);
  assert_false(selectList.open, "Enter key shouldn't open selectlist");
  await test_driver.send_keys(button, KEY_CODE_MAP.Space);
  assert_true(selectList.open, "Space key should open selectlist");
  assert_equals(selectList.value, "one");

  await test_driver.send_keys(selectList, KEY_CODE_MAP.ArrowDown);
  assert_equals(document.activeElement, selectList.querySelector('.two'),
    "Down arrow should focus the next option.");
  assert_equals(selectList.value, "one", "Down arrow should not commit the newly focused option.");

  await test_driver.send_keys(selectList, KEY_CODE_MAP.ArrowDown);
  assert_equals(document.activeElement, selectList.querySelector('.three'),
    "Down arrow should focus the next option.");
  assert_equals(selectList.value, "one", "Down arrow should not commit the newly focused option.");

  await test_driver.send_keys(selectList, KEY_CODE_MAP.ArrowDown);
  assert_equals(document.activeElement, selectList.querySelector('.three'),
    "Down arrow should do nothing if already at the last option.");
  assert_equals(selectList.value, "one", "Down arrow should not commit the newly focused option.");

  await test_driver.send_keys(selectList, KEY_CODE_MAP.ArrowUp);
  assert_equals(document.activeElement, selectList.querySelector('.two'),
    "Up arrow should focus the previous option.");
  assert_equals(selectList.value, "one", "Up arrow should not commit the newly focused option.");

  await test_driver.send_keys(selectList, KEY_CODE_MAP.ArrowUp);
  assert_equals(document.activeElement, selectList.querySelector('.one'),
    "Up arrow should focus the previous option.");
  assert_equals(selectList.value, "one", "Up arrow should not commit the newly focused option.");

  await test_driver.send_keys(selectList, KEY_CODE_MAP.ArrowUp);
  assert_equals(document.activeElement, selectList.querySelector('.one'),
    "Up arrow should do nothing if already at the first option.");
  assert_equals(selectList.value, "one", "Up arrow should not commit the newly focused option.");

  await test_driver.send_keys(selectList, KEY_CODE_MAP.Enter);
  assert_false(selectList.open, "Enter key should close selectlist");

  await test_driver.send_keys(button, KEY_CODE_MAP.Space);
  assert_true(selectList.open, "Space key should open selectlist");

  // This behavior is suspicious (since Space key can open the selectlist),
  // but it maches <select>. See https://github.com/openui/open-ui/issues/386
  await test_driver.send_keys(selectList, " ");
  assert_true(selectList.open, "Space key should *not* close selectlist");

  await test_driver.send_keys(selectList, KEY_CODE_MAP.Enter);
  assert_false(selectList.open, "Enter key should close selectlist");
}, "Validate Enter, Up/Down Arrow, and Space keyboard accessibility support for <selectlist>");

promise_test(async t => {
  const selectListOption = document.getElementById("selectList1-child0");
  const event = document.createEvent("Event");
  event.initEvent("keydown");
  selectListOption.dispatchEvent(event);
}, "Firing a synthetic event at a selectlist's option doesn't crash");

promise_test(async t => {
  const selectList2 = document.querySelector("#selectList2");
  const selectList2Button = document.querySelector("#selectList2-button0");
  assert_false(selectList2.open, "selectlist should not be initially open");

  await test_driver.send_keys(selectList2Button, KEY_CODE_MAP.Enter);
  assert_false(selectList2.open, "Enter key should not open a disabled selectlist");
  await clickOn(selectList2);
  assert_false(selectList2.open, "Click should not open a disabled selectlist");
  assert_equals(selectList2.value, "one");

  const selectList3 = document.querySelector("#selectList3");
  const selectList3Button = document.querySelector("#selectList3-button0");
  assert_false(selectList3.open, "selectlist should not be initially open");

  await test_driver.send_keys(selectList3Button, KEY_CODE_MAP.Enter);
  assert_false(selectList3.open, "Enter key shouldn't open selectlist");

  await test_driver.send_keys(selectList3Button, KEY_CODE_MAP.Space);
  assert_true(selectList3.open, "Space key should open selectlist");
  assert_equals(selectList3.value, "one");

  await test_driver.send_keys(selectList3, KEY_CODE_MAP.ArrowDown);
  assert_equals(document.activeElement, selectList3.querySelector('.three'),
    "Down arrow should go to next non-disabled option");

  await test_driver.send_keys(selectList3, KEY_CODE_MAP.ArrowUp);
  assert_equals(document.activeElement, selectList3.querySelector('.one'),
    "Up arrow should go to the previous non-disabled option");
}, "Validate Enter, Up/Down Arrow keyboard accessibility support for disabled <selectlist>");
</script>
